Characteristics of secondary inorganic aerosol and sulfate species in size-fractionated aerosol particles in Shanghai

Long, Shibing; Zeng, Jianrong; Li, Yan; Liu, Bao; Cao, Lu; Liu, Ke; Xu, Liang; Lin, Jun; Liu, Wei; Wang, Guanghua; Yao, Jianhua; Ma, Chunfeng; Yang, Zhao

doi:10.1016/s1001-0742(13)60521-5

Cited by 49 publications

(26 citation statements)

References 37 publications

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“…The average ratios of AE/CE in autumn haze days for PM 10 and PM 2.5 was~15% lower and~5% higher than those in autumn normal days, and AE/CE ratios in winter haze days werẽ 11% and~7% higher than those in winter normal for PM 10 and PM 2.5 , respectively, which suggested that particles on haze days were more acidic than those on normal days. This finding was well consistent with the observations of several previous studies Wang et al, 2006;Cheng et al, 2014;Long et al, 2014). A high concentration of secondary inorganic ions (SO 4 2À , NO 3 À , NH 4 þ ) not only imposed a significant effect on the haze formation and visibility deterioration, but also could enhance the acidic of particles.…”

Section: Acidity Of Atmospheric Aerosolsupporting

confidence: 93%

The variation of chemical characteristics of PM2.5 and PM10 and formation causes during two haze pollution events in urban Beijing, China

Gao

Tian

Cheng

et al. 2015

Atmospheric Environment

255

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Section: Acidity Of Atmospheric Aerosolsupporting

confidence: 93%

The variation of chemical characteristics of PM2.5 and PM10 and formation causes during two haze pollution events in urban Beijing, China

Gao

Tian

Cheng

et al. 2015

Atmospheric Environment

255

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“…As a weather phenomenon, haze has low atmospheric visibility (< 10 km) under the conditions of 80% relative humidity, and the sky becomes cloudy and bluish or yellowish Long et al, 2014). Visibility degradation is one of the most significant features in the haze episodes.…”

Section: Introductionmentioning

confidence: 99%

“…This is attributed primarily to the scattering and absorption of visible light by particulate matter (PM) in the atmosphere . Fine particles with aerodynamic diameters of 2.5 µm and less (PM 2.5 ) are the most effective factor for visibility impairment and fugitive dust) and regional emissions under the influence of different meteorological conditions, especially in spring and winter (Hou et al, 2011;Long et al, 2014). In recent years, haze events in Shanghai have been widely concerned and intensely studied (Hsu et al, 2012;Cheng et al, 2013;Lin et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Fu et al (2008) showed that the hourly PM 2.5 and PM 10 concentrations of the heavy haze days in Shanghai could reach as high as 466 and 744 µg m -3 on 19 January 2007, respectively. It is found that sulfate, nitrate and ammonium are the dominant species in secondary inorganic aerosols of Shanghai (Long et al, 2014), and the carbonaceous aerosols mainly emitted from the combustion sources also are important particle types in Shanghai (Hou et al, 2011;Yang et al, 2012). The contribution from the vehicle NO x emissions to the aerosol formation in Shanghai exhibits an increasing trend .…”

Section: Introductionmentioning

confidence: 99%

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A Heavy Haze Episode in Shanghai in December of 2013: Characteristics, Origins and Implications

Yan

Fan

et al. 2015

Aerosol Air Qual. Res.

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As the largest Chinese city by population and the largest city proper by population in the world, Shanghai has frequently suffered the heavy haze in recent years. In this study, the observational data (PM 2.5 , PM 10 , O 3 , NO 2 , CO and SO 2 ) at the ten urban monitoring stations in Shanghai from November 25 to December 9, 2013, were used to analyze the haze pollution. The source contributions of PM 2.5 in Shanghai were identified by trajectory clustering and hybrid receptor models (potential source contribution function (PSCF) and concentration weighted trajectory (CWT)). The results showed that for the whole study period, the ranges of pollutant concentrations are 2. . It was found that PM 2.5 contributed more than 80% of PM 10 for the whole period except the relatively clean period in which only 45% of PM 10 is PM 2.5 . The model analyses show that clean air masses reaching at Shanghai were from the far away regions like Mongolia and Inner Mongolia with the high mean wind speed (fast air masses). On the other hand, the heavy haze air masses were mainly from the nearby industrialized and urbanized provinces with industrial cities. It was found that the formation of the extremely heavy haze from December 5 to 7 in Shanghai was mainly because of the air pollution transported from the nearby provinces (i.e., Anhui, Jiangsu, Zhejiang) and central part provinces (such as Shandong, Hebei) of eastern China. The correlation analyses among PM 2.5 and other pollutants show that the PM 2.5 formation in Shanghai is affected by the sources similar to those of CO such as combustion, industry, mobile and oxidation of hydrocarbons. Finally, the controlling strategies are discussed on the basis of this result.

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“…The concentrations of water-soluble ion (K + , SO 4 2− , NO 3 − , NH 4 + , and Ca 2+ ) were determined with an ion chromatograph (ICS-2100, DIONEX, USA) using the analytical method as described in Reference [49]. A punch was placed in a 10 mL colorimetric tube, and 10 mL of ultrapure water was added to the tube.…”

Section: Water-soluble Ion Analysismentioning

confidence: 99%

Size-Segregated Characteristics of Carbonaceous Aerosols during the Monsoon and Non-Monsoon Seasons in Lhasa in the Tibetan Plateau

Wei

Liu

et al. 2019

Atmosphere

Self Cite

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In this paper, we intensively collected atmospheric particulate matter (PM) with different diameters (size ranges: <0.49, 0.49–0.95, 0.95–1.5, 1.5–3.0, 3.0–7.2, and >7.2 μm) in Lhasa during the monsoon and non-monsoon seasons. The results clearly showed that the concentrations of PM, organic carbon (OC), elemental carbon (EC), and water-soluble organic carbon (WSOC) during the non-monsoon season were much higher than the concentrations during the monsoon season. During the monsoon season, a bimodal size distribution of the OC and WSOC, which were at <0.49 μm and >7.2 μm, respectively, and a unimodal size distribution at <0.49 μm for the EC were observed. However, during the non-monsoon season, there was a trimodal size distribution of the OC and WSOC (<0.49 μm, 1.5–3.0 μm, and >7.2 μm), and a unimodal size distribution of the EC (<0.49 μm). Possible sources of the carbonaceous components were revealed by combining the particle size distribution and the correlation analysis. OC, EC, and WSOC were likely from the photochemical transformation of biogenic and anthropogenic VOC, and the incomplete combustion of biomass burning and fossil fuels at <0.49 μm, whilst they were also likely to be from various types of dust and biogenic aerosols at >7.2 μm. OC and WSOC at 1.5–3.0 μm were likely to have been from the burning of yak dung and photochemical formation. The above results may draw attention in the public and scientific communities to the issues of air quality in the Tibetan Plateau.

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Characteristics of secondary inorganic aerosol and sulfate species in size-fractionated aerosol particles in Shanghai

Cited by 49 publications

References 37 publications

The variation of chemical characteristics of PM2.5 and PM10 and formation causes during two haze pollution events in urban Beijing, China

The variation of chemical characteristics of PM2.5 and PM10 and formation causes during two haze pollution events in urban Beijing, China

A Heavy Haze Episode in Shanghai in December of 2013: Characteristics, Origins and Implications

Size-Segregated Characteristics of Carbonaceous Aerosols during the Monsoon and Non-Monsoon Seasons in Lhasa in the Tibetan Plateau

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